Product details:

Innobaby's Nursin' Smart Silicone 5 ounce starter bottles are designed by doctors and recommended by lactation consultants. This soft and flexible LSR silcone feeding system is safer than glass, lightweight and break proof. Breastfeeding babies show a significant reduction in nipple confusion. Less gas naturally reduces colic. 100% pure medical grade silcone material does not harbor bacteria. Comes with stage 1 nipple that is designed to resemble mother's nipple to aid baby in the transition from breast to bottle.